Winding for dynamo-electric machines.



PATENTED APR. 21, 1908.

I 'W. SCHMIDT. WINDING FOR DYNAMO ELECTRIC MACHINES,

APPLIOATION FILED JULY 17, 1905.

ATTOR'NEY UNITED sTArns PATENT onnron.

WALTER SCHMIDT, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELEC- TRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

WINDING FOR nYnaivro-ntnerezc MAOHKNES.

(specification of Letters Zatent.

Patented April 21, 1908.

To all whom it may concern:

Be it known that I, WALTER SCHMIDT, a citizen of the United States, and a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new regulator and which shall occupy a minimum amount of space outside of the core slots. To accomplish these objective results the winding of my invention has a novel arran ethe former.

ment of end connections which is specially applicable to the rotatable members of induction regulators having two poles.

Induction regulators are usually provided with relatively'widc and thin coils which are wound into openslots in the surface of the core, and the coils from one group of slots, com )rising approximately one-fourth of the whole number, are connected to a similar opposite group; then the remaining pair of opposite groups are? connected, the end connections oi the latter crossing over those of All the coils of the first layer of end connections are "perpendicular to the end of the core and follow curved parallel lines in crossing it to avoid interference with the core shaft. The outside layer of coils is divided into two portions; the coils which are nearer t at and in substantially diametrically .aiots cross over the coils of the hrst growt and are wound on edge while those that are further removed from the core shaft, are bent down, after leavim the slots, into a lane parallel with the end of the core and follow arcs which are substantially concentric with the circumference oi the core. This construction and arrangement not only necessitates the use of a minimum amount oi space but otters greater resistance to dis tortive forces and is relatively easy to com plete.

My invcntion'is illustrated in the acctmipanying drawings inwhich Figure l. is an end View oi a rotatable core wound in accordance therewith and Fig. 2 is a partial,'longitudinal'section of the core of Fig. l.

Referring to the drawings, a cylindrical magnetizahle core 1 is provided with a shaft 2 and with a plurality of radial slots in its surface which. may divided into two groups, ,two sets of oposite slots (1; and b forming onegroup ant two mtervening,-opposite sets of slots 0 and (Z forming the other group. The magnetizing winding for the core lc'omprises a plurality of coils of rectangular cross-section that are partially con-- tained in slots c. and which. are on opposite sides of the core. Another similar winding, the center line of which is perpendicular to that of the first, is located in the'slots c and (1.

Each coil of the first group comprises two straight portions 3 which are located in the core slots a and l) and two similar end connections 4; that are formed by bendin the coils as they leave the slots through angesof substantially 90 town; the center of the core and then in curves that may he merely sli ht deviations from strai ht lines or sub and G the former of which are bent SlClBWlSB,

adjacent to the ends of the slots, into planes substantially parallel to the ends of. the core and into arcs of circles substantially concentric with the shaft.

The connections 6 have substantially the some form and arrangement as the connections 4 except that they occupy planes that are more remote from the ends of the core.

The end connections may he supported by spacing blocks of insulating material, apair of similar blocks 7 being fitted between each end of the core and the grouis 4, and two pair of similar blocks (3 and 9 eingfitted to each of. the groups 5 and 6.

of a winding therefor comprising two groups of coils, one of which has ilat end connectors disposed in odgewise relation substantially parallel to the ends of the core and the other of w iiich has two sets of flat end connectors that respectively disposed in sidewise and edeewise rciation to the-ends of the core.

2. The combination with a magnetizable core having a plurality of longitudinal slots, of a winding therefor comprising two groups of coils of oblong cross-section the ends of some of which are dis osed edgewise and the ends of others oi wl'iieili are disposed sidewise in planes substantially parallel to the ends of the core.

3. The combination with a inagnetizahle core having a plurality of longitudinal slots, of a winding therefor comprising two approximately similar groups ol" coils at substantially right angles to each other, the end connectors of one group being disposed edgewise while the end connectors of one portion of the other group are disposed sidewisc in planes mrallel to the ends of said core and the emi connectors of theother portion are disposed edgewise in planes outside of and parallel to those of the liist group.

4. The combination with a magnctizable eore having a plurality of longitudinal slots, oi a winding theri-Vlor comprising two groups of coils at right angles to each other, the end connectors oi which are disposed in two substantially parallel planes the end connectors in one group being disposed in edgewisc relation and some: or those in the other group being disposed in edgewise and some in sidewise relation to the core ends.

The (elimination with a niagnetizable core having plurality of longitudinal slots, of two winnings the coils of which are at rightt,.'uigles to each other and the end connector s tl'which, at each end of the core, are

se in, three sets located in two parsets being dis osed edgewise with reference to the ends 0 the core.

6. The combination with a magnetizable core having a plurality of longitudinal slots, of a winding therefor comprising two a proximately similar groups of coils at SL1)- stantially right angles to each other, the end connectors of one group being dis osed edgewise while the end connectors 0 one portion of the other group are disposed sidewise in planes parallel to the ends of said core am the end connectors of the other portion are disposed edgewise in planes outside of and parallel to the first group, and a plurality of interposed insulating blocks for supporting the diiiercnt groups of end connectors.

7. The combination with a lnagnetizable core having a )lurality of longitudinal slots, of a winding t ereforcoinprising two groups of coils at right angles to each other the and connectors of which are disposed in two substantially )arallel planes, and a lurality of insulating blocks for supporting the difi'erent groups of end connectors.

8. The combination with a cylindrical core having longitudinal slots, of a winding comrising two groups of coils, one of which has its end ortions disposed in edgewise relation wit 1' reference to the core ends and the' other of which has end portions disposed in edgewise relation and other end portions dis osed in sidewis'e relation to the core ends. fir testimony whereof, I have hereunto subscribed my name this 12th day of July 1905.

WALTER SCHMIDT.

Witnesses:

WM. H. JACOBI, J. L. CHANTEMERLE. 

